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A kind of preparation method of zirconium silicate special for ceramic opacifying agent

A technology of opacifying agent and zirconium silicate, which is applied in chemical instruments and methods, silicon compounds, inorganic chemistry, etc., can solve the problems of large particle size, low purity of zirconium silicate, and wide particle size distribution range, so as to improve dispersion Good performance, avoid agglomeration, good dispersion

Active Publication Date: 2019-04-12
新昌县宝锋知识产权咨询服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: the zirconium silicate produced by traditional mechanical ball milling has low purity, large particle size, and wide particle size distribution range, resulting in poor opacification effect when zirconium silicate is used as a ceramic opacifying agent problem, a preparation method of zirconium silicate for ceramic opacifier is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019]Take 400g of cornstarch, 50g of gluten, and 80mL of activated yeast liquid in turn, pour them into a stainless steel basin filled with 150mL of deionized water, stir and mix with a glass rod for 5 minutes, and knead the dough for 15 minutes to make the cornstarch, gluten and activated yeast Mix the yeast liquid evenly to obtain dough, wrap the obtained dough with plastic wrap, and move it into the greenhouse, at a temperature of 35°C and a relative air humidity of 85%, let it stand at constant temperature and humidity for 45 minutes to allow the yeast to ferment, and then ferment The finished dough was transferred into a steamer filled with 600 mL of water, and steamed for 20 min at a temperature of 98 °C; when the steaming was completed, the steamed dough was transferred into a frozen grinder, and liquid nitrogen was used as a frozen grinding medium, and the The temperature is -80°C, freeze and pulverize, and pass through a 180-mesh sieve after pulverization to obtain th...

example 2

[0021] Take 300g of cornstarch, 30g of gluten, and 60mL of activated yeast liquid in turn, pour them into a stainless steel basin filled with 120mL of deionized water, stir and mix with a glass rod for 3 minutes, and knead the dough for 10 minutes to make the cornstarch, gluten and activated yeast Mix the yeast liquid evenly to obtain dough, wrap the obtained dough with plastic wrap, and move it into the greenhouse, at a temperature of 28°C and a relative air humidity of 80%, let it stand for 30 minutes at constant temperature and humidity to allow the yeast to ferment, and then ferment The finished dough was transferred into a steamer filled with 400mL of water, and steamed at 95°C for 10 min; when the steaming was completed, the steamed dough was transferred into a frozen grinder, and liquid nitrogen was used as the frozen grinding medium, and the Under the condition of -120°C, freeze and pulverize, pass through a 120-mesh sieve after pulverization, and obtain the sieved prod...

example 3

[0023] Take 350g of cornstarch, 40g of gluten, and 70mL of activated yeast liquid in turn, pour them into a stainless steel basin filled with 130mL of deionized water, stir and mix with a glass rod for 4 minutes, and knead the dough for 12 minutes to make the cornstarch, gluten and activated yeast Mix the yeast liquid evenly to obtain dough, wrap the obtained dough with plastic wrap, move it into the greenhouse, and let it stand at constant temperature and humidity for 40 minutes at a temperature of 30°C and a relative air humidity of 83% to allow the yeast to ferment, and then ferment The finished dough was transferred into a steamer filled with 500mL of water, and steamed at 97°C for 15 min; when the steaming was completed, the steamed dough was transferred into a frozen grinder, and liquid nitrogen was used as a frozen grinding medium, and the The temperature is -100°C, freeze and pulverize, and pass through a 160-mesh sieve after pulverization to obtain the sieved product, ...

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Abstract

The invention relates to a preparation method of zirconium silicate, in particular to a preparation method of zirconium silicate special for ceramic opacifier, and belongs to the technical field of preparation of ceramic materials. The preparation method comprises: firstly, kneading corn starch and vital gluten into dough, leavening the dough, and then freeze-grinding the dough; then, preparing a porous activated and carbonized material by carbonization and activation, performing ultrasonic mixing with tetraethoxysilane, and performing reaction to prepare a precursor mixed solution A; then, mixing zirconium oxychloride octahydrate and lithium fluoride with water to prepare a precursor mixed solution B; then, mixing the precursor mixed solution A with the precursor mixed solution B, performing high-temperature stirring reaction in a reaction kettle, filtering and drying a product, and then roasting the product. The purity of the zirconium silicate special for the ceramic opacifier is high and can be up to 98.2 percent, the granularity is small, the force distribution range is narrow, the grain size is 400 to 500nm, and the index of refraction can reach 1.96 to 2.01.

Description

technical field [0001] The invention relates to a method for preparing zirconium silicate, in particular to a method for preparing zirconium silicate specially used for ceramic opacifying agents, and belongs to the technical field of ceramic material preparation. Background technique [0002] According to preliminary estimates, the ceramic industry needs about 100,000 tons of glaze pigments, 200,000 tons of blank pigments, 800,000 tons of frits, and 200,000 tons of finished glazes per year. Among them, zirconium silicate is the main material used as opacifying agent in glaze and frit. [0003] At present, zirconium silicate is mainly made of natural zircon sand as a raw material, which is a white powder-like superfine powder processed by superfine crushing, iron removal, titanium and other processes. It is characterized by high refractive index, It can reach 1.93-2.01, and has good chemical stability and high temperature resistance. As an opacifying agent, zirconium silica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/20C03C8/20
CPCC01B33/20C01P2004/62C01P2006/60C01P2006/80C03C8/20
Inventor 汪逸凡许蘅
Owner 新昌县宝锋知识产权咨询服务有限公司